Web Reference: In this comprehensive tutorial, I'll walk you through solving this tricky HackerRank challenge while teaching you everything about defaultdict - from the basics to pro-level usage patterns. It's similar to the usual dictionary (dict) container, but the only difference is that a defaultdict will have a default value if that key has not been set yet. If you didn't use a defaultdict you'd have to check to see if that key exists, and if it doesn't, set it to what you want. print i. This prints: The defaultdict tool is a container in the collections class of Python. It's similar to the usual dictionary (dict) container, but the only difference is that a defaultdict will have a default value if that key has not been set yet.
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